It's a great way to burn calories, tone upper and lower body muscles, and improve cardiovascular health. The Stamina DT Rowing Machine 397 helps you realize all these benefits and combines them with the dynamic nature of air resistance. Air resistance adapts to your own intensity. If you want more of a challenge, increase the pace of your rowing stroke. Ease off for less. You can also change the baseline (magnetic) resistance level by adjusting the tension knob. Track time, count, distance, calories, and total count on the large, easy-to-read LCD monitor. Relaxation for Results The DT Rowing Machine 397 is outfitted with features to help you relax, so you can focus more on results and less on distractions. Place a drink in the bottle holder.